I actually believe that you can, as long as they blue tooth dongles are not plugged into the same computer it will work just fine. Think of it like with your phone, your phone can be attached to multiple bluetooth devices at the same time, but it will one use one at a time. But as long as you are not trying to connect both of you bluetooths to the same headphones at the same time, it should just work fine. Just have to turn one off when you turn the other on.